Dr. Plume's Sentence Clinic — Fix-the-Sentence Grammar (Grade 2)

About this activity

Gentle Dr. Plume's patients are muddled sentences, each with one ailment — a missing capital in "my dog is happy," no end mark after "The sun is hot," or "She run to school" — and the child finds the trouble and makes the repair. It's a free, interactive Grade 2 grammar activity that runs in the browser with no account.

Each round practices a different convention, so children meet the real range of fixes: capitalizing the first word, adding the right end mark (a period, not a comma or question mark), correcting subject-verb agreement (run to runs), adding a missing verb ("The cat ___ milk" to drinks), reordering jumbled words into "The dog runs fast," removing an extra word in "My mom she cooks," and splitting a run-on into two sentences. The wrong options are real near-misses, so the child has to diagnose what is actually wrong.

It is aligned to Common Core L.2.1 — demonstrating command of standard English grammar and usage. No timer, no score — just calm, playful practice.

What's inside this activity

• Designed for Grade 2 learners (ages about 7–8)
• Common Core strand: Language
• Aligned to Common Core standard L.2.1

How to play

Read the muddled sentence and find what is wrong.

Make the repair — capitalize, add a mark or word, fix the verb, reorder, delete, or split.

A warm check confirms a correct fix and offers an easy retry, with no timer and no score.

What your child practices

• Capitalizing the first word and ending a telling sentence with a period
• Fixing subject-verb agreement, like 'She runs' instead of 'She run'
• Adding a missing verb and removing an extra or repeated word
• Reordering jumbled words and splitting a run-on into two sentences

Learning goals

Apply the conventions of standard English grammar and usage — the focus of Common Core L.2.1

Recognize and repair common sentence problems in writing

Build the editing habit that clear writing depends on